[TechAssist] Re: Toshiba CF32C50, very low audio
- From: "pete" <tvtech@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 23 Jun 2005 18:49:56 -0500
I had one like that and it was the audio detector coil open
good luck
Pete
Perdomo Tv Inc Since 1972
Miami.Fl
----- Original Message -----
From: "peggs" <peggs@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>; <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, June 21, 2005 11:06 AM
Subject: [TechAssist] Re: Toshiba CF32C50, very low audio
> what about the ground/return of the Speaker itself.
> Is the Negative Lead Ground ???
> Or does it have some type of return circuit,like say a Yoke would have
> ????
>
> Peggs
>
> At 04:37 PM 6/20/05, gulftech@xxxxxxxx wrote:
>>I am missing something here that is driving me crazy.
>>
>>I originally thought it was the typical Sony sound module (SBX1637) bad.
>>I replaced that a little over three years ago, but put a new one in. No
>>change. It uses a TA8200AH audio output. I have audio in and out both
>>channels and at the speakers, but only the slightest sound FROM the
>>speakers. I subbed the speakers with no improvement. The 470 ufd
>>coupling caps are good. Tried a new TA8200. No change. Checked the
>>internal/external speakers switch. There is audio present at the audio
>>out jacks.
>>
>>The output stage seems to be working, because the signal is greater on
>>the output than the input. The darn thing SHOULD work, but it doesn't!
>>I have 27v B+, 5V on the mute, and about 11V on each output pin. No
>>print, but I think that is about normal.
>>
>>If you have a scan of the output stage or the voltages on IC610
>>(LA7800AH), it would sure help. Winstips lists QN14 and QA60 as possible
>>causes for no audio, but they check good and besides I do have audio
>>present at both inputs and outputs.
>>
>>Had enough fun for today.
>>
>>TIA,
>>
>>
>>Ken Smith
>>Gulf Technical Services
>>3034 Gulf Breeze Parkway
>>Gulf Breeze, FL 32563
>>850-934-8324 (Voice) 850-932-0819 (Fax)
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